Global Patent Index - EP 1986120 B1

EP 1986120 B1 20121114 - Systems, apparatus, and methods for detecting malware

Title (en)

Systems, apparatus, and methods for detecting malware

Title (de)

Systeme, Vorrichtung und Verfahren zur Erkennung von Schadprogrammen

Title (fr)

Systèmes, appareils et procédés pour détecter des programmes malveillants

Publication

EP 1986120 B1 20121114 (EN)

Application

EP 08155001 A 20080423

Priority

US 73888207 A 20070423

Abstract (en)

[origin: EP1986120A1] Various embodiments, including a method comprising creating a first fuzzy fingerprint of a known malware file, the first fuzzy fingerprint including a first set of calculated complexity approximations and weightings for each of a plurality of blocks within the known malware file, creating a second fuzzy fingerprint of a file to be checked, the second fuzzy fingerprint including a second set of calculated complexity approximations and weightings for each of a plurality of blocks within the file to be checked, comparing the second fuzzy fingerprint to the first fuzzy fingerprint, calculating a similarity probability for each of the block-wise comparisons, the calculation including a respective weightings for each of the plurality of blocks within the known malware file and for each of the plurality of blocks within the file to be checked, and the calculation including a distance between the compared blocks; and calculating an overall similarity probability for the plurality of blocks compared.

IPC 8 full level

G06F 21/00 (2006.01)

CPC (source: EP)

G06F 21/56 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1986120 A1 20081029; EP 1986120 B1 20121114; ES 2400623 T3 20130411; US 2008263669 A1 20081023; US 8312546 B2 20121113

DOCDB simple family (application)

EP 08155001 A 20080423; ES 08155001 T 20080423; US 73888207 A 20070423